Concealment of juvenile bull trout in response to temperature, light, and substrate: Implications for detection.

ABSTRACT: Bull trout (Salvelinus confluentus) are challenging to detect as a result of the species cryptic behavior and coloration, relatively low densities in complex habitats, and affinity for cold, high clarity, low conductivity waters. Bull trout are also closely associated with the stream bed, frequently conceal in substrate, and this concealment behavior is poorly understood. Consequently, population assessments are problematic and biologists and managers often lack quantitative information to accurately describe bull trout distributions, estimate abundance, and assess status and trends; particularly for stream-dwelling populations. During controlled laboratory trials, we recorded concealment, resting, and swimming behavior of juvenile wild bull trout in response to: (1) constant and fluctuati

SUBMITTER: Thurow RF 

PROVIDER: S-EPMC7473556 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature